/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.nutch.indexer;

import java.io.IOException;

import org.apache.hadoop.mapreduce.JobContext;
import org.apache.hadoop.mapreduce.OutputCommitter;
import org.apache.hadoop.mapreduce.OutputFormat;
import org.apache.hadoop.mapreduce.RecordWriter;
import org.apache.hadoop.mapreduce.TaskAttemptContext;

public class IndexerOutputFormat extends OutputFormat<String, NutchDocument> {

	@Override
	public RecordWriter<String, NutchDocument> getRecordWriter(
			TaskAttemptContext job) throws IOException, InterruptedException {

		// final IndexWriter[] writers =
		// NutchIndexWriterFactory.getNutchIndexWriters(job.getConfiguration());

		final IndexWriters writers = new IndexWriters(job.getConfiguration());

		// for (final IndexWriter writer : writers) {
		// writer.open(job);
		// }
		writers.open(job.getConfiguration());

		return new RecordWriter<String, NutchDocument>() {

			@Override
			public void write(String key, NutchDocument doc)
					throws IOException {
				// TODO: Check Write Status for delete or write.
				writers.write(doc);
			}

			@Override
			public void close(TaskAttemptContext context)
					throws IOException, InterruptedException {
				writers.close();
			}
		};
	}

	@Override
	public void checkOutputSpecs(JobContext jobContext)
			throws IOException, InterruptedException {
	}

	@Override
	public OutputCommitter getOutputCommitter(TaskAttemptContext arg0)
			throws IOException, InterruptedException {
		// return an empty outputcommitter
		return new OutputCommitter() {
			@Override
			public void setupTask(TaskAttemptContext arg0) throws IOException {
			}

			@Override
			public void setupJob(JobContext arg0) throws IOException {
			}

			@Override
			public boolean needsTaskCommit(TaskAttemptContext arg0)
					throws IOException {
				return false;
			}

			@Override
			public void commitTask(TaskAttemptContext arg0) throws IOException {
			}

			@Override
			public void abortTask(TaskAttemptContext arg0) throws IOException {
			}
		};
	}
}
